diff --git a/mod/forum/templates/local/grades/grader.mustache b/mod/forum/templates/local/grades/grader.mustache
index 2eef2d4b101..5c526304bad 100644
--- a/mod/forum/templates/local/grades/grader.mustache
+++ b/mod/forum/templates/local/grades/grader.mustache
@@ -43,7 +43,7 @@
 >
     {{> mod_forum/local/grades/local/grader/navigation }}
 
-    <div class="d-flex flex-grow-1 h-100 position-relative">
+    <div class="d-flex flex-grow-1 overflow-hidden position-relative">
         {{> mod_forum/local/grades/local/grader/content }}
         {{#drawer}}{{> mod_forum/local/grades/local/grader/grading }}{{/drawer}}
     </div>
diff --git a/mod/forum/templates/local/grades/local/grader/content.mustache b/mod/forum/templates/local/grades/local/grader/content.mustache
index 944fbe9ce2c..d1915f0e469 100644
--- a/mod/forum/templates/local/grades/local/grader/content.mustache
+++ b/mod/forum/templates/local/grades/local/grader/content.mustache
@@ -30,7 +30,7 @@
     {
     }
 }}
-<div class="grader-module-content w-100 h-100" data-region="module_content_container" role="region" aria-label="{{#str}} usersforumposts, mod_forum {{/str}}">
+<div class="grader-module-content w-100" data-region="module_content_container" role="region" aria-label="{{#str}} usersforumposts, mod_forum {{/str}}">
     <div data-region="module_content" class="grader-module-content-display">
         {{> mod_forum/local/grades/local/grader/module_content_placeholder }}
     </div>